Round 1

Each player individually had three minutes to answer up to 10 questions, with all other players sequestered in soundproof booths backstage. Players were spotted £1,000 to start the round, could offer multiple guesses without penalty, and could pass as often as desired.

Once a player had answered or passed on all 10 questions, they could negotiate with one broker at a time to get answers to any questions that had stumped them. Each studio broker could press a button to illuminate a light on their podium and signal their readiness to make an offer. However, the player would not know if a particular call-in broker might know an answer until/unless they called on that person. If the player and a broker agreed on a price, the broker then stated their answer; if it was correct, the price was paid to them out of the player's winnings for the round.

Each correct answer awarded £100 to the player, regardless of whether they or a broker had given it. Answering all 10 questions correctly awarded a £5,000 bonus. After all players had taken a turn, the two high scorers kept whatever money they had accumulated and advanced to Round 2. All others were eliminated from the game with no winnings.

Round 2

The two remaining players were each spotted £1,000 to start this round. The host asked alternating questions for four minutes, starting with the high scorer from Round 1. After the host finished a question, the player in control had 15 seconds to respond, and could immediately turn to the brokers for help. If time ran out, the opponent had a further 15 seconds to answer. If both players missed the same question, the host gave the correct answer and moved on to the next one. Players could only use their spotted/accumulated money from this round to buy answers.

Questions were now worth £200 each, and the player who gave more correct answers won a £5,000 bonus. The player with the higher combined total from Rounds 1 and 2 advanced to Round 3, while the other player was eliminated with only their Round 1 winnings.

Round 3

In the final round, which was broadcast live, the player had two minutes to answer 10 questions, each of which added to their total winnings. They could turn to the brokers immediately, and could use any or all of their accumulated money over the course of the entire game (including this round) to purchase answers. Each question had to be answered correctly before the player could move on to the next one.

Question values were as follows:

If the player answered the first nine questions correctly, the clock was stopped and they chose one of three categories. After the host read a question in the chosen category, the clock began to run again and the player had to answer with no help from the brokers.

If the player answered all 10 questions correctly before time ran out, the Vault opened and they won the entire jackpot in addition to their accumulated winnings from the first two rounds. If not, they kept only their accumulated money from all three rounds and a call-in player was chosen at random. This player could win the jackpot by answering six questions in 60 seconds, including two that had been correctly answered during the game.

If both the studio and call-in players failed to win the jackpot, it was increased by £100,000 as a rollover for the next show.